title: The importance of alveolar bone loss, width of periodontal space, visibility of lamina dura and divergence of roots on the rocking moments in extraction of teeth in the lower jaw.
abstract: The purpose of this study was to investigate the effect of the alveolar bone loss, with width of the periodontal space, the visibility of the lamina dura and the divergence of the roots on the rocking moments that were measured by means of strain gauges and on their acting times. Of the factors studied, alveolar bone loss had the greatest effect on the moments. The extraction time shortened when alveolar bone loss increased. When the periodontal space widened, the moments used decreased. The extraction time was significantly lengthened when the roots were diverged.
mesh_terms: D000328:Adult; D000539:Alveolar Process / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible; D010014:Osteolysis / Q000473:pathology; D010519:Periodontium / Q000473:pathology; D013314:Stress, Mechanical; D013674:Technology, Dental; D013997:Time Factors; D014081:Tooth Extraction / Q000295:instrumentation; D014092:Tooth Root / Q000033:anatomy & histology